Stress and Reliability Analyses of the Hip Joint Endoprosthesis Ceramic Head with Macro and Micro Shape Deviations

Fuis, V.; Janíček, Přemysl; Houfek, L.

doi:10.1007/978-3-540-92841-6_391

Cited by 8 publications

(4 citation statements)

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“…The negative behavior of the ceramics is the brittleness and therefore the tensile stresses in the ceramic head will be analysed in detail [8]. The maximum tensile stress in the head is located on the contact surface near the contact region.…”

Section: Resultsmentioning

confidence: 99%

“…In young patients, the operation is mostly aimed at reconstructing the joint's pathologically developed geometry [6]. In older age, operations prevail in which the patients are provided with partial or total endoprostheses [8,13]. These may be of different design solutions, with various materials being used in the endoprosthesis' individual parts.…”

Section: Introductionmentioning

confidence: 99%

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Stress Analysis of the Hip Joint Endoprosthesis Ceramic Head for Different Values of Shape Deviations

Fuis

Janíček

2014

AMR

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The paper deals with the problems of ceramic head of hip joint endoprosthesis destructions, and with assessing the impact of shape deviations of conical surfaces on the tensile stress under ISO 7206-5 loading. The failure of the hip joint endoprosthesis ceramic head has always traumatic consequences for the patient, since a part of or even the whole endoprosthesis has to be reoperated. Hence, it is desired to reduce the number of implant re-operations to the minimum. Therefore the computational modelling of the stress of the head was realised. The shape deviations of the ideal contact cone areas of the head and stem are parameters that significantly influence the tensile stress in the head and its reliability. The assumed shape deviations of the head’s and stem’s cones are macro shape deviations (different cone taper) and micro shape deviations (unevennes) measured using the IMS-UMPIRE equipment. The stress state in the ceramic heads was solved using the FEM and head’s failure probability is based on the Weibull weakest link theory [4, 5 and 9].

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stress Analysis of the Hip Joint Endoprosthesis Ceramic Head for Different Values of Shape Deviations

Fuis

Janíček

2014

AMR

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“…Illustration of measured micro shape deviations on the stem and head from ideal taper shape (micro-roughness) on the expanded tapers of stem and head are in Fig. 16 [11]. We may state that in this instance the microroughness values are ±3,5nm.…”

Section: Impact Of Local Micro-roughness On Taper Surfaces On the Head Destruction Probabilitymentioning

confidence: 86%

Computational Modeling of the Probability of Destructions in Total Joint Endoprosthesis Ceramic Heads using Weibull's Theory

Janíček¹,

Fuis²,

Málek³

2010

Acta Mechanica Slov.

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His field of study covers mechanics of solid bodies, human biomechanics, theory of system, theory of modelling, theory of experiment, theory of statistics, behavior of materials. He is chairman of the Engineering Mechanics Branch Council, deputy chairman of the Committee of the Czech Society for Biomechanics, head of the society's Moravian branch, member of the scientific board of the Faculty of Education of the Masaryk University in Brno, as well as member of editorial boards of several scientific journals. His publication activity contains 121 scientific articles in journals, 86 papers on conferences and 19 reports of grant projects. He is co-author of the publication "Computational Models in Engineering Practice" and author of the "Systematic Encyclopedia of Selected Disciplines for Engineers".

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“…Biomechanics has been developing for decades, however, still offering many fields which have not been researched enough yet and those which abound with opportunities for innovations [4][5][6][7]. Biomechanics is relatively wide branch dealing with various issues, nevertheless, one of the most common aims is orthopedy which is focused chiefly on joints and joint replacements [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Stress Analysis of the Thin Coating of the Trapeziometacarpal Replacement

Svojanovský

Fuis

2018

DDF

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The paper reviews stress and deformation analysis of the thin coating. The coating covers a surface of a contact component of the trapeziometacarpal joint replacement which serves as a surgical treatment of a hand joint disease called rhizarthrosis. Motivation for this study consists mainly in the fact of occasional damage of some parts of the replacement in practice [2]. It emerged that the thin coating breaks in the location of contact which opens an effort to explore stress states of such a location depending on various input parameters. Better awareness of detailed contact conditions could lead to improvement of the replacement design and, thus, prevention from necessary reoperation.

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Stress and Reliability Analyses of the Hip Joint Endoprosthesis Ceramic Head with Macro and Micro Shape Deviations

Cited by 8 publications

References 1 publication

Stress Analysis of the Hip Joint Endoprosthesis Ceramic Head for Different Values of Shape Deviations

Stress Analysis of the Hip Joint Endoprosthesis Ceramic Head for Different Values of Shape Deviations

Computational Modeling of the Probability of Destructions in Total Joint Endoprosthesis Ceramic Heads using Weibull's Theory

Stress Analysis of the Thin Coating of the Trapeziometacarpal Replacement

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